Overview
Mount Whitney is the highest peak in the contiguous United States at 14,505 feet. The standard Mount Whitney Trail is a 22-mile out-and-back in Inyo National Forest from Whitney Portal (8,360 feet) to the summit, gaining 6,100 feet of elevation. It's the defining entry in any guide to the best hikes near Los Angeles for serious high-altitude day hikers willing to make the drive. It's the most popular route up the mountain, and it doesn't require technical climbing skills or specialized equipment. What it does require is serious fitness, a lottery permit, respect for altitude, and a willingness to suffer through one of the longest day hikes in the Sierra Nevada.
Most hikers attempt Whitney as a single-day push, which means 12 to 18 hours of continuous hiking. Others split it into an overnight trip, camping at Trail Camp (12,000 feet) and summiting the next morning. Either way, this is a major undertaking. The combination of distance, elevation gain, and altitude makes Whitney far more demanding than its non-technical reputation might suggest. People with strong hiking backgrounds regularly get shut down by altitude sickness above 12,000 feet.
The trailhead sits at the end of Whitney Portal Road, 13 miles west of Lone Pine off US-395. From the summit, you can see the Owens Valley 10,000 feet below to the east, the Great Western Divide and Sequoia National Park to the west, and on clear days, the curvature of the Earth on the horizon.
The Route
Miles 0 to 3: Whitney Portal to Lone Pine Lake (10,000 ft). The trail starts at Whitney Portal and climbs steadily through Jeffrey pine and red fir forest. The grade is moderate but persistent. You'll cross the North Fork of Lone Pine Creek on a footbridge and switchback up through mixed conifer forest. Lone Pine Lake appears at about mile 2.8, a scenic spot that makes a reasonable turnaround for hikers who want a shorter day. The trail skirts the north shore of the lake and continues climbing.
Miles 3 to 6: Outpost Camp to Trail Camp (12,000 ft). Above Lone Pine Lake, the trail passes Outpost Camp (10,365 feet), which has bear boxes, tent sites, and a seasonal stream. This is the lower overnight option. The trail continues through increasingly sparse forest, passing Mirror Lake (10,640 feet) and crossing Trailside Meadow before reaching Consultation Lake. The vegetation thins as you approach Trail Camp at 12,000 feet. Trail Camp is the primary overnight staging area: a rocky flat with bear boxes, solar toilet, and space for dozens of tents on granite slabs. Water is available from a seasonal stream, but it may dry up in late season.
Miles 6 to 8.5: Trail Camp to Trail Crest (13,600 ft). This is the crux of the hike. The infamous 97 switchbacks climb 1,600 feet in 2.5 miles up the east face of the Sierra crest. The terrain is exposed granite and talus. In early season (June, early July), snow can cover portions of the switchbacks, creating dangerous conditions that require ice axes and crampons. By late July in most years, the switchbacks are clear. The altitude here is what gets people. You're above 12,000 feet and climbing steadily. Every step requires more effort than it would at sea level. Take your time, breathe deliberately, and don't push through headaches or nausea.
Miles 8.5 to 11: Trail Crest to Summit (14,505 ft). At Trail Crest (13,600 feet), you cross onto the west side of the Sierra crest. The view opens up to the Hitchcock Lakes directly below and the Kern River drainage stretching toward Sequoia. The trail traverses the west face of the ridge, passing several "windows" (gaps in the ridge that frame views of the east side). The final 2.5 miles are mostly gradual, following the ridgeline south to the summit. The last section climbs through boulder fields to the summit plateau. A stone shelter built by the Smithsonian Institution in 1909 marks the top. On a clear day, the 360-degree panorama is staggering.
Descent: Return the same way. The 97 switchbacks are harder on the knees going down than they were on the lungs going up. Trekking poles are essential for the descent. Most hikers take 5 to 8 hours to get back to Whitney Portal from the summit. Budget time accordingly, because the afternoon sun makes the lower trail sections hot and draining.
The Permit Lottery
Whitney permits are required from May 1 through November 1 for all summit attempts via the Whitney Trail. The permit system is managed through Recreation.gov and uses a lottery.
Lottery timeline: The application window typically opens in February and closes in mid-March. Results are announced in late March or April. You submit your preferred dates (up to 15 date choices per application), and the system randomly selects winners. The application fee is $6, and if selected, the permit costs $15 per person.
The odds: Roughly 20,000 applications compete for approximately 5,500 day-hike slots and 3,500 overnight slots each season. Your best chances are for midweek dates (Tuesday through Thursday) and shoulder-season dates (late May, early June, October). Weekend dates in July and August are the most competitive, with success rates sometimes below 20 percent.
Walk-in permits: A small number of unclaimed and cancelled permits are released as walk-ins at the Eastern Sierra Interagency Visitor Center in Lone Pine, starting at 11 AM the day before the hike date. Showing up Wednesday for a Thursday permit gives better odds than Friday for a Saturday. Some hikers have reported waiting hours or even camping overnight at the visitor center for walk-in permits during peak season.
Overflow dates: If you don't get your preferred dates, consider the shoulder season. Late September and October offer dramatically fewer applicants, but weather and snow conditions become unpredictable. Late May and June may still have significant snow on the 97 switchbacks.
Do not hike Whitney without a permit. Rangers patrol the trail, and fines are steep. The permit system exists because the trail was being damaged by overuse, and it has made a real difference in preserving the experience.
Altitude: The Real Challenge
Whitney's biggest hazard isn't the distance or the terrain. It's the altitude. At 14,505 feet, the air contains roughly 60 percent of the oxygen available at sea level. Your body simply cannot perform the way it does at lower elevations.
Acute Mountain Sickness (AMS) affects a significant percentage of Whitney hikers. Symptoms include headache, nausea, loss of appetite, dizziness, and fatigue. Mild AMS is uncomfortable but manageable. Severe AMS can progress to High Altitude Pulmonary Edema (HAPE) or High Altitude Cerebral Edema (HACE), both of which are medical emergencies.
Acclimatization strategy: If you're coming from sea level, do not drive to Whitney Portal and start hiking the same day. The minimum recommendation is to spend one night at elevation (Lone Pine at 3,700 feet, or better, Whitney Portal campground at 8,000 feet) before your hike. Two nights is better. Some hikers spend a day at Bishop Pass or Kearsarge Pass before attempting Whitney, getting a calibrated experience of Sierra altitude and terrain. The time investment pays off enormously.
Hydration matters. You lose water much faster at altitude through increased respiration, and dehydration makes AMS worse. Drink consistently throughout the hike. Minimum 4 liters for a day hike, and consider 5 to 6 liters if you run hot or it's a warm day. There's no reliable water above Trail Camp in late season.
Know when to turn around. A persistent, worsening headache above 12,000 feet is your body telling you to descend. So is nausea that doesn't improve with rest. The summit will be there next year. Pushing through serious altitude symptoms is how people end up in helicopter evacuations.
When to Hike
Late July through mid-September is the most reliable window. Snow on the 97 switchbacks typically melts out by mid to late July in an average snow year. After heavy winters, ice can persist into August. Check trip reports and Whitney Zone conditions on the Inyo National Forest website before your trip.
Start early. This is absolutely non-negotiable. Leave Whitney Portal between 1 AM and 4 AM for a day hike. Yes, you'll be hiking in the dark. That's normal on Whitney. Starting at 4 AM puts you at the summit around 10 AM to noon, and back at the portal by late afternoon. Starting at 6 AM means you'll be above 13,000 feet when afternoon thunderstorms are most likely (1 PM to 4 PM). Lightning above treeline on an exposed ridge is not where you want to be.
Afternoon thunderstorms are common from mid-July through August. They build quickly and can produce lightning, hail, and heavy rain. The summit ridge offers zero shelter. If you see dark clouds building or hear thunder, descend immediately. Do not wait for the storm to arrive.
What to Bring
- Headlamp with fresh batteries. You'll be hiking in the dark for the first few hours.
- Water: 4 to 6 liters minimum. Consider a bladder system for easy access while hiking. There's a seasonal stream at Trail Camp, but it may be dry by September.
- Layers: Summit temperatures can be below freezing with wind chill, even in August. Bring a warm insulating layer, windproof shell, gloves, and a hat. The temperature difference between Whitney Portal and the summit can be 40 to 50 degrees.
- Trekking poles: Essential for the 97 switchbacks (up and down) and for stability on the rocky summit ridge.
- Sun protection: SPF 50+ sunscreen, quality sunglasses, and a hat. UV intensity at 14,000 feet is extreme.
- Food: 3,000 to 5,000 calories of high-energy food. You're burning far more than a typical hike. Eat consistently, even if altitude suppresses your appetite.
- WAG bag: Human waste carry-out bags are provided at the trailhead and are required above Outpost Camp. Pack out all waste. There is a solar toilet at Trail Camp, but it is not always functional.
- First aid: Blister care, pain relievers (ibuprofen can help mild altitude headaches), tape, and basic wound care.
Common Mistakes
Skipping acclimatization. The number one reason people fail on Whitney. Driving from Los Angeles (sea level) to Whitney Portal (8,360 feet) and starting at 2 AM the same night is a recipe for misery. Spend at least one night at elevation first.
Starting too late. If you're leaving the portal after 5 AM for a day hike, you're behind schedule. The math is simple: you need 12 to 18 hours. Starting late means finishing late, and finishing late means exposure to afternoon storms and hiking the last miles in the dark while exhausted.
Not enough water. Four liters is a starting point, not a generous estimate. The combination of altitude, exertion, dry air, and sun exposure drains you faster than you expect.
Ignoring altitude symptoms. Headache and nausea above 12,000 feet are not things to push through. They are your body's warning system. Descend, hydrate, rest. Trying to gut it out leads to dangerous situations.
Cotton clothing. The temperature swing on Whitney is enormous. Cotton holds moisture, loses insulation when wet, and can contribute to hypothermia at altitude. Wear synthetic or merino wool base layers.
Trailhead Access
Whitney Portal is at the end of Whitney Portal Road, 13 miles west of Lone Pine on US-395. The road is paved and well-maintained, climbing from 3,700 feet in Lone Pine to 8,360 feet at the portal. It's open from roughly mid-May through November, depending on snow. The road is steep with sharp switchbacks, so drive carefully, especially in the pre-dawn darkness.
The trailhead has a paved parking lot (fills before midnight on busy summer nights), vault toilets, a bear box area, potable water, and a small store that sells snacks and coffee (seasonal hours). The Whitney Portal Store opens early during peak season and serves legendary pancakes. Post-hike pancakes at Whitney Portal are a tradition worth honoring.
Lone Pine is the nearest town with full services: gas, groceries, restaurants, and lodging. The Eastern Sierra Interagency Visitor Center on US-395 south of town is the place to pick up walk-in permits and get current trail conditions.
After the Hike
Your legs will not work properly for at least two days. This is normal. Lone Pine has several restaurants, a couple of motels, and the iconic Dow Villa Hotel (where John Wayne stayed during filming in the Alabama Hills). The Alabama Hills, just west of town, offer easy walking among surreal rock formations with Whitney as the backdrop. It's a perfect low-key recovery activity the day after your summit.
If you're heading north on US-395 after your hike, the Keough's Hot Springs south of Bishop or the natural hot springs at several pullouts along the highway offer a well-earned soak.
Standing on top of Whitney is one of those experiences that recalibrates your sense of what's possible on foot. It's a brutally long day, the altitude will humble you, and the 97 switchbacks will test your patience. But the view from 14,505 feet, with the entire Sierra Nevada spread out around you, makes every step worth it.
For the permit process, reviewing the national forest camping permit guide provides useful context on how Recreation.gov quota systems work, even though Whitney's lottery is more competitive than most. Bear canister requirements apply above Outpost Camp, and the Whitney Zone enforces them strictly. After the summit, the rest of Inyo National Forest offers a full range of recovery hikes at lower altitudes, from the easy Convict Lake Loop near Mammoth to the otherworldly Methuselah Trail in the White Mountains.